The battle in 1954 were French forces were defeated .
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The Battle of Dien Bein Phu shaped the war, by ending it.
French forces at Dien Bien Phu fell to the communist Viet Minh May 7th 1954 .
The Battle of Dien Bien Phu was fought from March 13 to May 7, 1954, and was the decisive engagement of the First Indochina War (1946-1954), the precursor to the Vietnam War.
France .
The defeat at Dien Bien Phu led the French military to surrender their positions in Vietnam. The French left Vietnam, leaving the United States at the forefront of the conflict.